播种密度对扬农啤5号茎蘖动态及产量的影响分析  

Effects of Planting Density on Tiller Dynamics and Yield in Barley Yangnongpi 5

作　　者：吕超[1] 郭三红 王金华 陈雪莲 吴国峰 许如根[1] 

机构地区：[1]扬州大学大麦研究所,江苏扬州225009 [2]上海农场,江苏大丰224151

出　　处：《大麦与谷类科学》2010年第4期27-29,共3页Barley and Cereal Sciences

基　　金：国家大麦现代产业技术体系建设专项;国家农业科技成果转化基金(2008GB2C100104);江苏省农业科技支撑计划(BE2009303;BE2010314)

摘　　要：为探讨扬农啤5号高产的最佳基本苗,研究调查分析了扬农啤5号4个不同基本苗的茎蘖动态、产量性状的差异。结果表明:基本苗对生育前期茎蘖动态有一定的差距,但返青拔节后差距进一步缩小,成穗数相差较小,产量差异不显著。对扬农啤5号而言,适当降低基本苗、促进个体生长,在确保一定穗数的前提下,争取大穗大粒是进一步提高扬农啤5号的有效途径。To explore the best planting density for high yield on barley Yangnongpi 5. The difference of tiller dynamics and characters of yield were investigated on four different planting density of Yangnongpi 5. The results showed ： the gap of the tiller dynamics were existed for planting density on the earth of plant growth, but the difference were reduced after turning green and jointing stage. The difference of spike rate and yield among four planting density were smaller and not significant. So the appropriate planting density decreased, and promote individual growth, big spike and grain to ensure that a certain number of spike, were effective way to enhance the yield of Yangnongpi 5.

关 键 词：大麦 密度 产量 茎蘖动态 

分 类 号：S512.31[农业科学—作物学]